OK Thanks, I'm going to pop out both thermistors on the refrigerator side and check the resistance and see if they vary with the temp. If both are good, then I'll check the damper. I'ts a shame that there's no service manual for this model, although it is very close to the 2001 models covered in the manual AJ provided, (mine is newer).

Don't pop out the thermistors. You can check the resistance at the control board. Remove the light cover and shine a flashlight into the vent. You'll probably see the damper door sitting loose in there. Replace the damper assembly, WR49X10091.

Absolutely, I did check them from the mother board, and with each in a glass of ice water got 16K ohms. Out of the ice water the resistance fluctuated with the temperature, so i'm pretty sure the thermistors are good. Plan on replacing the damper module. thanks

AJ, I have seen this manual (31-9075 GE Arctica Side-By-Side CustomCool Refrigerator.pdf) listed on various sites including yours. Although it doesn't cover the 26" model which I have, do you think it is closer than the manual you provided me earlier in this thread? ThanksPS I sent a pay pal donation for all the help

AJ, I have seen this manual (31-9075 GE Arctica Side-By-Side CustomCool Refrigerator.pdf) listed on various sites including yours. Although it doesn't cover the 26" model which I have, do you think it is closer than the manual you provided me earlier in this thread? ThanksPS I sent a pay pal donation for all the help

FYIThe new damper assembly has fixed the problem. The old damper was flopping around. The only thing is that after 2 days, my freezer is set to 0 degrees but stays at 3 degrees, my FF is set to 37 degrees but stays at 40 degrees. Not sure why it won't set exactly like it used too, but I can live with this.

Thank you, I did happen to have a copy of this manual but I don't think it covers my exact model. To enter the diag mode you must display 5 in the freezer display and a 5 in the refrigerator display (page 33). My refrigerator display will not bump down to single digits, it goes from 34 to 44 then OFF. This model has the express cool, express thaw tray and turbo cool setting. Any advise? Thanks

This is an old thread but has been helpful to me--to answer this question about entering the diagnosis mode for the models with the three digit temp display, press "WARMER" until both freezer and fridge displays say "OFF" then hold down COLDER+WARMER on both sides 3 sec until they flash zeros...all other tests function as shown in the service manual from there.